[njtransit]

The article doesn’t actually explain how they work… How does the indirect pointer get set to nil? Does it use runtime.SetFinalizer?

[usrnm]

https://cs.opensource.google/go/go/+/refs/tags/go1.23.4:src/...

https://cs.opensource.google/go/go/+/master:src/runtime/mhea...

Looks like most of it is implemented directly in the runtime.